Table 1 Psychiatric comorbidity among chronic urticaria patients: all studies
From: Psychiatric comorbidity in chronic urticaria patients: a systematic review and meta-analysis
Study | Type of study | Patients | Control group |
|---|---|---|---|
I. Psychiatric comorbidity in CU patients (studies without a control group) | |||
 1. Juhlin [18] | Cohort study | 330 CU patients | No |
 2. Pulimood et al. [19] | Cohort study | 20 CU patients | No |
 3. Picardi et al. [20] | Cohort study | 29 CU patients | No |
 4. Picardi et al. [21] | Cohort study | 16 CU patients | No |
 5. Staubach et al. [22] | Cohort study | 100 CU patients | No |
 6. Mehta et al. [23] | Cohort study | 50 CU patients | No |
 7. Sorour et al. [24] | Cohort study | 110 CU patients | No |
II. Psychiatric comorbidity in CU patients (studies with healthy individuals as a control group) | |||
 8. Uguz et al. [26] | Case–control | 89 CU patients | 60 individuals |
 9. Atefi et al. [25] | Case–control | 30 CU patients | 30 individuals |
 10. Chu et al. [17] | Case–control | 177,879 CU patients | 996,356 individuals |
 11. Staubach et al. [27] | Case–control | 100 CU patients | 96 individuals |
 12. Ozkan et al. [28] | Case–control | 84 CU patients | 75 individuals |
 13. Lapi et al. [29] | Case–control | 3489 CU patients | 1,714,746 individuals |
III. Psychiatric comorbidity in CU patients (studies with control subjects other than healthy individuals) | |||
 14. Calıkusu et al. [31] | Case–control | 31 CU patients | 31 patients with psychogenic excoriation (PE) |
 15. Yang et al. [30] | Case–control | 75 CU outpatients | 133 patients with tinea pedis |
IV. Comorbidity with specific psychiatric disorders in CU patients | |||
 16. Demet et al. [33] | Cohort study | 7 CU | No |
 17. Sukan et al. [34] | Case–control | 50 CU patients, 50 vitiligo patients | 50 individuals |
 18. Chung et al. [32] | Case–control | 100 CU patients | 60 patients with allergy |
 19. Bashir et al. [36] | Cohort study | 3 CU patients | No |
 20. Tuna et al. [35] | Case–control | 130 CU patients | 100 individuals |
V. Case reports–case series—psychiatric interventions in CU patients | |||
 21. Hashiro [37] | Case report | 1 CU patient with anxiety-depressive disorder | No |
 22. Gupta et al. [39] | Case series | 5 patients with PTSD diagnosed with CU | No |
 23. Gupta et al. [38] | Case series | 2 CU patients with panic disorder | No |
VI. Other studies | |||
 24. Seyhan et al. [40] | Cohort study | 636 dermatologic patients | No |
 25. Perugi et al. [41] | Cohort study | 347 patients with bipolar disorder | No |